is this a good use of time and resources for the dea? >> this is an excellent use of dea resources. we're targeting everything. all the drugs you just mentioned. this issue is very important to us. >> most people would say, hey look. it's marijuana. what's the big deal? >> it's more potent now than ever so the days of the former arguments about it being a mild drug that everybody uses, those days are over. >> angele says controlled conditions and sophisticated growing techniques have made marijuana stronger and, therefore, more dangerous. the government considers it a gateway to more serious drugs and spends millions of dollars a year on marijuana law enforcement. pro-marijuana groups argue that in the cases of more potent pot users adjust their intake and smoke less and they say there is no evidence that marijuana leads to harder drugs. as for the government's war on marijuana, they say it's expensive and has had little effect on the millions of users. >>> a drug war raging in our national parks and forests. >> kept thinking if i turn my back i'm going to get a bullet in the back o